На примере полей Image и Body:
function THEME_preprocess_page(&$variables) {
if ($node = \Drupal::routeMatch()->getParameter('node')) {
if (isset($node->field_image->entity)) {
$variables['field_image_url'] = file_create_url($node->field_image->entity->getFileUri());
}
$variables['body_text'] = $node->body->value;
}
}
if ($node = \Drupal::routeMatch()->getParameter('node')) {
if (isset($node->field_image->entity)) {
$variables['field_image_url'] = file_create_url($node->field_image->entity->getFileUri());
}
$variables['body_text'] = $node->body->value;
}
}